Electro-Voice 250, 1252 operation manual Connect Multiple Displays, Nexus P40N Modes, P41N

6.2.1: Connect Multiple Displays

One cable (housing two-wire RS-485 and two-wire power wires plus shield) is used to connect the displays. One port of the Nexus meter supports 12 VA. Each P40N, P41N or P43N requires 3.3 VA (maximum 3.8 VA). The Master Display (P40N) is the master in communication. The Amp, Power and Nexus devices are slaves in communication. Therefore, the Master Display (P40N) should be at the end of the daisy-chained units as shown in Figure 6.2 below. The Nexus port is set at 1. Protocol is Modbus RTU and Baud Rate is 9600.

NEXUS UNIT	P43N	P41N	P40N
+V -V S B(-) A(+)	+V -V S B(-) A(+)	+V -V S B(-) A(+)
			+V -V S B(-) A(+)

Figure 6.2: P40N Display Daisy Chain

NOTE: The power lines in Figure 6.2 are shown separate for clarity.

All lines are actually in one cable.

Shown here are diagrams of the P41N and P43N Displays with example readings on each screen.

6.2.2: Nexus P40N Modes

Figure 6.3: P41N Display Figure 6.4: P43N Display

The Nexus P40N LED External Display has three modes:

•Dynamic Readings Mode (section 6.3 and 6.4)

•Nexus Information Mode (section 6.5 and 6.6)

•Display Features Mode (section 6.7 and 6.8)

Each Mode is divided into Groups. Most Groups are further broken down into Readings.

•Use the MODE button to scroll between Modes.

•Use the UP/DOWN arrows to scroll from Group to Group within each Mode.

•Use the LEFT/RIGHT arrows to scroll from Reading to Reading within each Group.

Use the Communicator EXT software to Flash Update the P40N External Display.

Electro Industries/GaugeTech Doc #: E107706 V1.25 6-2